In the motorized rack and pinion system in a milling machine, the pinion has 50 teeth and a pitch radius of 0.75 in. Over a certain range of its motion, the motor turns at 800rpm. A) Determine the horizontal velocity of the rack. B) If a peak torque of 10ft*lb is supplied by the motor, determine the pulling force that is produced in the rack and transferred to the milling machine.